<template>
  <div class="person">
    <h1>中国</h1>
    <h2 ref="title2">北京</h2>
    <h3>尚硅谷</h3>
    <button @click="showLog">点我输出h2这个元素</button>
  </div>
</template>

<script lang="ts" setup name="Person">
import { ref } from 'vue'

// 创建一个title2，用于存储ref标记的内容
let title2 = ref()
let a = ref(0)
let b = ref(1)
let c = ref(2)

function showLog() {
  console.log(title2.value)
}

defineExpose({ a, b, c })
</script>

<style scoped>
.person {
  background-color: skyblue;
  box-shadow: 0 0 10px;
  border-radius: 10px;
  padding: 20px;
}

button {
  margin: 0 5px;
}

li {
  font-size: 20px;
}
</style>